Oh and one more thing... As far as trying a different email address, you don't need to reconfigure your phone. I was simply suggesting signing up for a Gmail account or something as a test and then booking a new reservation at Hertz.com as a test to see if you get the email. You can just login to Gmail from a web browser on your PC/Mac or from Safari/Chrome from your phone as well. If you want to figure out where the problem is, you need to approach it systematically and rule out one thing at a time.